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david
Questions and answers by visitors named
david
, page 2
Questions (508)
When 18 g of ethylene glycol C2H6O2 is dissolved in 150 g of pure water, the freezing point of the solution is
_C . (The freezing
3 answers
697 views
Which of the following is NOT true of colligative properties? Colligative properties are...
A. dependent on the mass of solute
3 answers
536 views
1)Does the solubility of borax in water increase or decrease as temperature increases?
2)Is the solvation of borax in water an
4 answers
1,818 views
how would i do something like this?
Calculate the concentration of borate ion for each titration. Use the borate ion
2 answers
584 views
If a solution is diluted, say by adding 100ml of solvent, does the number of moles of solute change? Does the concentration
3 answers
520 views
the concentration of OH ions in a household ammonia cleaning solution is0.0035M. Calculate the concentration of H ions.
would it
2 answers
492 views
The correct interpretation of the equation below is:?
Fe3+(aq) + SCN¨C(aq)¡ú FeSCN2+(aq) A. The reaction is incomplete because
4 answers
1,624 views
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
2 answers
877 views
calculate the equilibrium constant for the reactionas written at 940K.
NH4Cl->NH3+HCl delta H= NH4Cl -1779, NH3 -46, HCl -92
2 answers
1,478 views
The first step of the synthesis is described by the reaction below. When 1.200 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of
1 answer
484 views
i need to find eveidence of 3 things that jesus did and 3 things jesus didn`t do.
thanks!
1 answer
457 views
what is a monomer
what is a polymer what is the structure of a protein
5 answers
775 views
-1/2- (-5/8)=
3 answers
259 views
-9 to the 2nd power - (-6) to the 2nd power
3 answers
436 views
Find the first and third quartiles, Q1 and Q3, of the following set of numbers.
14, 4, 13, 18, 8, 15, 8, 3, 11, 8
1 answer
411 views
methanoic acid react with potassium dichromate to form what?
A colorless solution and CO2 is formed as known
2 answers
483 views
Q1. What will be formed when propanone reacted with sodium hydrogensulphite?
There is white precipitate is the resulting solution
1 answer
451 views
Q1. What will be formed when propanone reacted with sodium hydrogensulphite?
There is white precipitate is the resulting solution
2 answers
610 views
Q1. What will be formed when propanone reacted with sodium hydrogensulphite?
There is white precipitate is the resulting solution
4 answers
1,220 views
find the area between y=x^3–14x^2+45x
and y=–x^3+14x^2–45x i am having trouble how the graphs look like and how to do
3 answers
548 views
draw a supply curve for an ice parlor switching production from ice cream to yogurt.
1 answer
320 views
When I was considering what to do with my $10,000 Lottery winnings, my broker suggested I invest half of it in gold, the value
3 answers
635 views
Find the amount accumulated in the sinking fund if $1600 is deposited quarterly for 20 years at 6% per year. (Assume
1 answer
413 views
Find the amount accumulated in the sinking fund if $1600 is deposited quarterly for 20 years at 6% per year. (Assume
1 answer
331 views
Find the amount accumulated in the sinking fund if $1600 is deposited quarterly for 20 years at 6% per year. (Assume
1 answer
402 views
Find the amount accumulated in the sinking fund if $1600 is deposited quarterly for 20 years at 6% per year. (Assume
1 answer
382 views
Find the periodic withdrawals for the annuity of $400,000 at 4%, paid out monthly for 16 years. (Assume end-of-period withdrawal
3 answers
572 views
divide
36x^8-24x^6+20x^3/-4x^3
1 answer
446 views
Mike makees the following table of the distances he travels during the first day of the trip. A suppose Mike continues riding at
4 answers
1,384 views
add -4/5+{-3/4} simple form 1 1/5
1 answer
260 views
determine max and min value 3,- 36/7,-1,-2/3,5/4,-5,26/9 answer max3 min-5 ?
put in asending order -2/9,-1/9,3/7,5/9,1/8
1 answer
311 views
evaluate |-24|-|-22| answer -2?
-|-618|answer -618 3-|7-9|answer 5? ?
1 answer
360 views
find median 4,5,6,8,11,17 answer 7
find mean and median 68,69,71,75,76,76,81,82,86,88,93,94,95,95,96 answer mean is 83 median is
2 answers
823 views
find mean, median and is mean or median more useful representation 25,29,30,30,30,31,33,34,40,41,46,63 mean 36 median 32 more
1 answer
304 views
divide 30/49 divide 16/21= 45/56
a triangle has a base 15ft and an altitude of 8ft find the area =60ft^2
6 answers
520 views
The electricity costs of a buisness increased from $15,000 in one year to $16,000 the next. To the nearest whole percent what
1 answer
428 views
what is a good speech of secretary and vice presidents:
this is what secretary it does attend council meetings take pictures at
2 answers
1,178 views
solv the inequality:
1. 7-3x [is less than or equal to] 22 ---> x [is greater than or equal to] -5 2. 4x-2/3 [is greater than or
1 answer
426 views
when do you use homophone besides or except? Ican attend the meeting if it is scheduled any day of the week .....
Friday. What
1 answer
406 views
what are the landscape regions that the hudson river flows through
4 answers
1,385 views
Mrs Sue do you mind checking my answers for me please? I have been working on this assignment for several days.
The following
4 answers
538 views
Mrs Sue I corrected the answers that you said I had wrong in my assignment . Do you mind checking these for me again to see if I
2 answers
517 views
Mrs Sue,
Sorry to keep bothering you ! I have once more corrected the four answers . Do you mind checking them again. I so hate
1 answer
463 views
if i had just a regular triangle and then it turned 90 degrees how would it look
1 answer
317 views
What other challenges do case workers face when working with placement of the elderly in long-term care facilities?
1 answer
410 views
1.) A water sample is found to have 9.0 ppb of chloroform,CHCL3.
How many grams of CHCL3 would be found in a glassful (250 ML) of
7 answers
3,425 views
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH?
Ok...I got 480, and
3 answers
404 views
Under an O2 pressure of 1.00 atm, 28.31 mL of O2 dissolves in 1.00 L H2O at 25 degrees.
Determine the molarity of O2 in an
1 answer
456 views
An ideal liquid solution has two volatile components.
In the vapor in equilibrium with the solution, the mole fractions of the
4 answers
1,942 views
Under an O2 pressure of 1.00 atm, 28.31 mL of O2 dissolves in 1.00 L H2O at 25 degrees.
Determine the molarity of O2 in an
5 answers
704 views
How many milliliters of glycerol, C3H8O3(d=1.26g/mL), must be added per kilogram of water to produce a solution with 4.85 mol %
3 answers
841 views
Without finding the exact answer, select which of the following numbers is the best estimate of each sum or difference and
2 answers
530 views
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH. Use two sig figs.
I
1 answer
369 views
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH. Use two sig figs.
I
3 answers
413 views
How many grams of water would you add to 1.00 kg of 1.48 m CH3OH(aq) to reduce the molality to 1.00 m CH3OH. Use two sig figs.
I
4 answers
2,357 views
A 355g sample of a saturated solution of KNO3(s) in water is prepared at 25.0 degrees C.
If 50g H2O is evaporated from the
3 answers
995 views
In the reaction A to products, A is found to be 0.489 M at t=72.0 s and 0.468 M at t=82.2 s
What is the average rate of the
1 answer
363 views
When the glucose solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown
3 answers
744 views
When the glucose solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown
10 answers
7,158 views
Factor f(x) = x^4 + x^3 – 8x^2 + 6x + 36 completely. Show all steps.
3 answers
524 views
(3n^4)^4 =
3d^3 x d^9 = 5e^4 x 6e^5 = thanks
1 answer
181 views
L,M,N,O and l,m,n,o are they equal, equivalent or neither? I can not figure this out please help.
3 answers
371 views
Most natural gas consists of about 90% methane, CH4. Assume that the solubility of natural gas at 20 C and 1 atm gas pressure is
3 answers
1,553 views
how would you factorise
a) 9x^2 - 49 b) 9x^2 - 121 c) 49x^2 - 25x^2 thankyou
2 answers
724 views
le samedi, je joue ou tennis avec mon per'e
7 answers
637 views
• Via Microsoft Word, write 700 to 1,050 words explaining the business model of University of Phoenix and also write a SWOT
3 answers
658 views
10 soldiers of 500 attempt to climb a 100Ft cliff, they fail in : 57 ft, 73, 81, 78,63,85,41,68,75,88. What is probability of
3 answers
292 views
If 20 mL of 0.10 M NaOH are added to 30 mL of 0.20 M HOAc, what is the pH of the resulting solution? (Ka = 1.8 ´ 10-5 for
3 answers
572 views
Find the derivative of the function.
y = (x^2+8x+3)/square root of x
1 answer
357 views
calculate the pressure exerted by 2.50 moles of CO2 confined in a volume of 5.00 L at 450K. Compare the pressure with that
4 answers
1,637 views
calculate the pressure exerted by 1.00 moles of CO2 confined in a volume of 5.00 L at 450. K. Compare the pressure with that
3 answers
706 views
solve by square root property
(8x-3)squared=5
1 answer
351 views
The lengths of 2 legs of a right triangle are 16 cm and 30 cm. What is the length of the hypotenuse?
4 answers
1,687 views
A ladder resting against the side of a building reaches 32 ft up the building. If the ladder is 40 ft long, how far from the
4 answers
889 views
Which is closest to the length of the diagonal of a square whose sides measure 20 cm?
4 answers
1,035 views
7. The following are the lengths of the sides of four triangles. Which is a right triangle?
Triangle EFG Triangle HIJ Triangle
4 answers
793 views
Pythagorean Theorem - david, Thursday, July 15, 2010 at 2:10pm
EFG 3,6,9 HIJ 60,156,144 KLM 56,102,105 NOP 36,48,64 The following
3 answers
540 views
Which is closest to the length of the diagonal of a square whose sides measure 20 cm?
a.20 cm b.28 cm c.40 cm d.200 cm
5 answers
431 views
Caleb scored the following on his first four tests: 78, 84, 88, and 82. What is the least grade he can receive on his next test
4 answers
484 views
6/7s-3/4=4/5-1/7s+1/6
3 answers
373 views
6/7s-3/4=4/5-1/7s+1/6
1 answer
218 views
A bike accelerates from 0.0 m/s to 4.1 m/s in 6 s. What distance does it travel?
thanks for the help
2 answers
929 views
A bike accelerates from 0.0 m/s to 4.1 m/s in 6 s. What distance does it travel?
thanks for the help
2 answers
543 views
A truck is stopped at a stoplight. When the light turns green, it accelerates at 2.9 m/s2. At the same instant, a car passes the
2 answers
603 views
microscope lens used to locate the specimen
2 answers
627 views
which of the following is an example of a symptom?
2 answers
676 views
The air in a 5.00L tank has a pressure of 1.20atm. What is the new pressure of the air when the air is placed in tanks that have
1 answer
654 views
A sample of nitrogen has a volume of 50.0L at a pressure of 760mmHg. What is the volume of the gas at each of the following
3 answers
2,443 views
Two identical cars are traveling at the same speed. One is heading due east and the other due north, as the drawing show. What
4 answers
4,802 views
How do I take the derivative in respect to c1 for the following utility function?
u1 = log(c1) + log [1/2(x-c1-c2)] details
1 answer
472 views
How do I take the derivative in respect to c1 for the following utility function?
u1 = log(c1) + log [1/2(x-c1-c2)] details
1 answer
329 views
A 280 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0° above the
1 answer
1,059 views
i need 2 lewis dot structures for C3H8O. thanks
1 answer
449 views
i need 2 lewis dot structures for C3H8O. thanks
2 answers
605 views
Can you tell me the geometry(around the carbon/oxygen atom) and whether this is polar or non polar CH3CH3? thx
1 answer
407 views
predict the order of increasing acidity of the compounds. Give a brief explanation why. Butanoic acid-Nexanoic acid-Benzoic
2 answers
566 views
Consider the normal tick tack toe game, but this time you have to AVOID getting 3 in a row in any line. Is there any strategy
1 answer
300 views
A 5.00 kg ball (ball 1), moving to the right at a velocity of +4.00 m/s on a frictionless table, collides head-on with a
2 answers
569 views
A 1.0 kg object is suspended from a vertical spring whose spring constant is 105 N/m. The object is pulled straight down by an
2 answers
626 views
An object is solid throughout. When the object is completely submerged in ethanol alcohol., its apparent weight is 15.2 N. When
1 answer
493 views
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